US5802053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transport gateway between a native network and a mixed network
Assignee: International Business Machines Corp
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Filing: 1995-10-13
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Granted: 1998-09-01
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Expires: 2015-10-13
Abstract
Abstract In order to more fully support the need to interconnect dissimilar networks, methods and apparatus are set forth which allow a transport gateway between a native (SNA/APPN) network and a mixed or non-native network to preserve the dynamic functions of the native network. The functions of fully dynamic directory and route selection are supported, in addition to the ability to use parallel gateways when connecting a native network to a mixed network. The ability to route information through a gateway from a dependent LU requester in a non-native network to a dependent LU server in a SNA/APPN network is also demonstrated. This allows concatenation of native and non-native networks while maintaining the addressability and accessibility of the native network.
Inventors
- 👤 Gregory Bollella
- 👤 Kathleen Marie Hogan
- 👤 Vachaspathi Peter Kompella
- 👤 Alisa Lynn Morse
- 👤 Diane Phylis Pozefsky
- 👤 Soumitra Sarkar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:38
CPC Classifications
H; H04; H04L; H04L61/00; H04L61/09; H04L61/10; H04L61/106; H04L9/00; H04L9/40; H04L69/00; H04L69/08
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
116 words
A method of routing information from an SNA/APPN network having standard APPN LOCATE functions through a gateway and across one or more non-native networks to a target node wherein said fictitious control point name is stored in an unused address location in an IP reverse address table, said method comprising the steps of: establishing a unique, fictitious APPN node having a control point name for each non-native network attached through said gateway; and, utilizing the standard APPN LOCATE functions to locate said target node utilizing said fictitious APPN node control point name to route information to said target node via said gateway and through at least one of said non-native networks to reach said target node.
Claim 2
Independent Claim
116 words
A method of routing information from an SNA/APPN network having standard APPN LOCATE functions through a gateway and across one or more non-native networks to a target node wherein said fictitious control point name is stored in an unused address location in an IP reverse address table, said method comprising the steps of: establishing a unique, fictitious APPN node having a control point name for each non-native network attached through said gateway; and, utilizing the standard APPN LOCATE functions to locate said target node utilizing said fictitious APPN node control point name to route information to said target node via said gateway and through at least one of said non-native networks to reach said target node.
Claim 3
Dependent Claim
19 words
A method as in claim 1, wherein said unused address is address 127.0.0.3 in the IP reverse address table.
Claim 4
Independent Claim
134 words
A method of routing information from an SNA/APPN network having standard APPN LOCATE functions through a gateway and across one or more non-native networks to a target node, said method comprising the steps of: establishing a unique, fictitious APPN node having a control point name for each non-native network attached through said gateway; utilizing the standard APPN LOCATE functions to locate said target node utilizing said fictitious APPN node control point name to route information to said target node via said gateway and through at least one of said non-native networks to reach said target node; and indicating that each said gateway and all target nodes in a non-native network are connected to a unique connection network, wherein said connection network indicator is stored in an unused address in an IP reverse address table.
Claim 5
Independent Claim
134 words
A method of routing information from an SNA/APPN network having standard APPN LOCATE functions through a gateway and across one or more non-native networks to a target node, said method comprising the steps of: establishing a unique, fictitious APPN node having a control point name for each non-native network attached through said gateway; utilizing the standard APPN LOCATE functions to locate said target node utilizing said fictitious APPN node control point name to route information to said target node via said gateway and through at least one of said non-native networks to reach said target node; and indicating that each said gateway and all target nodes in a non-native network are connected to a unique connection network, wherein said connection network indicator is stored in an unused address in an IP reverse address table.
Claim 6
Dependent Claim
19 words
A method as in claim 3, wherein said unused address is address 127.0.0.4 in the IP reverse address table.
Claim 7
Independent Claim
155 words
A method of accessing one or more dependent Logical Units (LUs) in a non-SNA network, from one or more LUs on an SNA network, such that each said dependent LU can be reached through an SNA over TCP/IP gateway, said method comprising: establishing a fictitious connection network name; associating said fictitious connection network with the non-SNA network; associating each Dependent Logical Unit DLU in the non-SNA network with said fictitious connection network name; establishing a session, through the gateway, between said one or more dependent LUs and said one or more LUs on the SNA network; mapping each said dependent Logical Unit twice, each mapping represented as an entry, said entries referred to as a first entry and a second entry; said first entry mapping said dependent LU to its IP address; and said second entry mapping the dependent LU to a predetermined, arbitrarily chosen invalid, IP address which signifies that the LU is dependent.
Claim 8
Independent Claim
155 words
A method of accessing one or more dependent Logical Units (LUs) in a non-SNA network, from one or more LUs on an SNA network, such that each said dependent LU can be reached through an SNA over TCP/IP gateway, said method comprising: establishing a fictitious connection network name; associating said fictitious connection network with the non-SNA network; associating each Dependent Logical Unit DLU in the non-SNA network with said fictitious connection network name; establishing a session, through the gateway, between said one or more dependent LUs and said one or more LUs on the SNA network; mapping each said dependent Logical Unit twice, each mapping represented as an entry, said entries referred to as a first entry and a second entry; said first entry mapping said dependent LU to its IP address; and said second entry mapping the dependent LU to a predetermined, arbitrarily chosen invalid, IP address which signifies that the LU is dependent.
Claim 9
Independent Claim
53 words
A method of determining whether a particular LU in an Multi Protocol Transport Networking MPTN network is dependent, said method comprising the steps of: determining whether said LU is mapped to a unique, predetermined address in a reverse address table, indicating that said LU is dependent if mapped to said unique predetermined address.
Claim 10
Independent Claim
53 words
A method of determining whether a particular LU in an Multi Protocol Transport Networking MPTN network is dependent, said method comprising the steps of: determining whether said LU is mapped to a unique, predetermined address in a reverse address table, indicating that said LU is dependent if mapped to said unique predetermined address.
Claim 11
Dependent Claim
21 words
A method as claimed in claim 6 wherein said unique, predetermined address in the reverse address table is IP address 127.0.0.2.
Claim 12
Independent Claim
85 words
A method of mapping one or more dependent Logical Units (LUs) enabling each said dependent LU to be reached through an SNA over TCP/IP gateway, said method comprising: mapping in the gateway each said dependent LU twice, each mapping represented as an entry, said entries referred to as a first entry and a second entry; said first entry mapping said dependent LU to its IP address; and said second entry mapping the dependent LU to IP address 127.0.0.2, which signifies that the LU is dependent.
Claim 13
Independent Claim
85 words
A method of mapping one or more dependent Logical Units (LUs) enabling each said dependent LU to be reached through an SNA over TCP/IP gateway, said method comprising: mapping in the gateway each said dependent LU twice, each mapping represented as an entry, said entries referred to as a first entry and a second entry; said first entry mapping said dependent LU to its IP address; and said second entry mapping the dependent LU to IP address 127.0.0.2, which signifies that the LU is dependent.
Claim 14
Independent Claim
137 words
A method of routing information from an SNA/APPN network having standard APPN LOCATE functions through a gateway and across one or more non-native networks to a target node wherein said fictitious control point name is stored in an unused address location in an IP reverse address table, said method comprising the steps of: is establishing a unique, fictitious APPN node having a control point name for each non-native network attached through said gateway; utilizing the standard APPN LOCATE functions to locate said target node utilizing said fictitious APPN node control point name to route information to said target node via said gateway and through at least one of said non-native networks to reach said target node; and indicating that each said gateway and all target nodes in a non-native network are connected to a unique connection network.
Claim 15
Independent Claim
137 words
A method of routing information from an SNA/APPN network having standard APPN LOCATE functions through a gateway and across one or more non-native networks to a target node wherein said fictitious control point name is stored in an unused address location in an IP reverse address table, said method comprising the steps of: is establishing a unique, fictitious APPN node having a control point name for each non-native network attached through said gateway; utilizing the standard APPN LOCATE functions to locate said target node utilizing said fictitious APPN node control point name to route information to said target node via said gateway and through at least one of said non-native networks to reach said target node; and indicating that each said gateway and all target nodes in a non-native network are connected to a unique connection network.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-08-31 | 2002-03-02 | 2002-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-31 | 2006-03-02 | 2006-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-31 | 2010-03-02 | 2010-09-01 | $7700.00 | Window Closed / Lapsed |